Results 91 to 100 of about 1,368,932 (431)
Advanced Engineering Materials, EarlyView.This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach +6 more
wiley +1 more source
ChemCatChem, Volume 15, Issue 2, January 20, 2023., 2023 Ammonia Decomposition for a Carbon‐Free Hydrogen Fuel Technology: Ammonia is a promising example of an efficient and transportable hydrogen carrier. The thermocatalytic decomposition of ammonia can be used to produce COx‐free hydrogen on demand. Thorough research into this process and the development of active catalyst materials are seen as the ...
Stefan Peters +2 more
wiley +1 more source
Evaluation of Tip Loss Corrections to AD/NS Simulations of Wind Turbine Aerodynamic Performance
Applied Sciences, 2019 The Actuator Disc/Navier-Stokes (AD/NS) method has played a significant role in wind farm simulations. It is based on the assumption that the flow is azimuthally uniform in the rotor plane, and thus, requires a tip loss correction to take into account ...
Wei Zhong +3 more
doaj +1 more source
Influence of atmospheric conditions on the power production of utility-scale wind turbines in yaw misalignment [PDF]
arXiv, 2020 The intentional yaw misalignment of leading, upwind turbines in a wind farm, termed wake steering, has demonstrated potential as a collective control approach for wind farm power maximization. The optimal control strategy, and resulting effect of wake steering on wind farm power production, are in part dictated by the power degradation of the upwind ...
arxiv
Noise Measurement of a Wind Turbine using Thick Blades with Blunt Trailing Edge [PDF]
arXiv, 2023 The noise generated by wind turbines can potentially cause significant harm to the ecological environment and the living conditions of residents. Therefore, a proper assessment of wind turbine noise is crucial. The IEC 61400-11 standard provides standardized guidelines for measuring turbine noise, facilitating the comparison of noise characteristics ...
arxiv
Wind Turbine Design: Multi-Objective Optimization [PDF]
Wind Turbines - Design, Control and Applications, pp.350, 2016,
978-953-51-2496-2, 2016 Within the last 20 years, wind turbines have reached matured and the growing worldwide wind energy market will allow further improvements. In the recent decades, the numbers of research papers that have applied optimization techniques in the attempt to obtain an optimal design have increased.
arxiv +1 more source
Scaling‐Up of Structural Superlubricity: Challenges and Opportunities
Advanced Functional Materials, EarlyView.At increasing length‐scales, structural superlubricity (SSL) faces challenges from physical and chemical energy dissipation pathways. This study reviews recent experimental and theoretical progress on these challenges facing the scaling‐up of SSL, as well as perspectives on future directions for realizing and manipulating macroscale superlubricity ...
Penghua Ying +4 more
wiley +1 more source
Journal of Marine Science and Engineering, 2023 Wind energy is a type of clean energy that can address global energy shortages and environmental issues. Wind turbine blades are a critical component in capturing wind energy.
Hanwei Teng +5 more
doaj +1 more source
Predictive control of wind turbines by considering wind speed forecasting techniques [PDF]
, 2009 A wind turbine system is operated such that the points of wind rotor curve and electrical generator curve coincide. In order to obtain maximum power output of a wind turbine generator system, it is necessary to drive the wind turbine at an optimal rotor ...
Jovanovic, Milutin +3 more
core
Wind Energy Science, 2019 . Most megawatt-scale wind turbines align themselves into the wind as defined by the wind speed at or near the center of the rotor (hub height). However, both wind speed and wind direction can change with height across the area swept by the turbine ...
P. Murphy, J. Lundquist, P. Fleming
semanticscholar +1 more source